Effect of Cr/Zr on the Electrochemical Behavior of Copper in NaCl/NaOH/HCl Solution
The potentiodynamic polarization and cyclic voltommogroms studies were carried out on the copper with micro-addition of Cr and Zr in solutions of 0.5M NaCl, 0.5M NaOH and 0.5M HCl at room temperature. The corrosion resistance of pure copper is deteriorated with addition of the alloying elements Cr and Zr. Significant reducing in the corrosion resistance is observed when Cr and Zr are added simultaneously. Moreover, the lowest corrosion current density is obtained in the NaCl solution followed by the NaOH solution and HCl solution. Compared with the different effect on the passive layer in the NaCl solution, the micro-addition of Cr and Zr leads to the increasing of the corrosion resistance for the passive layer in 0.5M NaOH solution and 0.5M HCl solution.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Y. N. Zhang et al., "Effect of Cr/Zr on the Electrochemical Behavior of Copper in NaCl/NaOH/HCl Solution", Advanced Materials Research, Vols. 239-242, pp. 1582-1585, 2011